Use of Spring @Resource leads to "mapped-name is required" Exception in JBoss EAP

Issue

• A @Resource annotation is used to wire a Spring components

• During deployment, a RuntimeException is encountered indicating failure to bind the resource:

  java.lang.RuntimeException: mapped-name is required for <some-class-name>/<some-field-name> of deployment abc.war
      at org.jboss.web.tomcat.service.injection.WebResourceHandler.loadXmlResourceEnvRefs(WebResourceHandler.java:287)
      at org.jboss.web.tomcat.service.injection.WebResourceHandler.loadXml(WebResourceHandler.java:325)
      at org.jboss.web.tomcat.service.TomcatInjectionContainer.processMetadata(TomcatInjectionContainer.java:550)